Home / 68,899,519.46-103,350,119.77-20,378,353.88

Finding the Fourth Proportional to 68,899,519.46, 103,350,119.77 and 20,378,353.88

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Solution

The fourth proportional to 68,899,519.46, 103,350,119.77 and 20,378,353.88 is: 30,567,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,899,519.46 : 103,350,119.77 = 20,378,353.88 : x
  2. Step 2: Convert to fraction form
    68,899,519.46/103,350,119.77 = 20,378,353.88/x
  3. Step 3: Cross multiply
    68,899,519.46x = 103,350,119.77 × 20,378,353.88
  4. Step 4: Simplify right side
    68,899,519.46x = 2,106,105,314,213,444
  5. Step 5: Solve for x
    x = 2,106,105,314,213,444/68,899,519.46
  6. Step 6: Final answer
    x = 30,567,779.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.